Piston Assembly
AssigneeDeltaHawk Engines, Inc.
InventorDavid Keith Gill
Life of this patent
Estimating the term…
Abstract
A piston assembly is provided with a piston skirt coupled to a piston head. The piston skirt has an outer surface that defines a cavity between a first end and a second end of the piston skirt. A support is coupled to the piston skirt and positioned within the cavity. A wrist pin is mounted on the support. The wrist pin includes a first end and a second end. In various embodiments, the wrist pin includes a mounting wall with a surface extending along a plane from the first end to the second end, and a connecting rod is coupled to the mounting wall. In other embodiments, the piston assembly includes channels and openings to provide fluid communication for oil from an inlet located on the connecting rod to an outlet on the support in order to provide cooling to the piston head.
Claims20
A piston assembly, comprising:
- a piston skirt centered on and extending along a longitudinal axis, the piston skirt comprising:
- a first end;
- a second end opposite the first end with respect to the longitudinal axis;
- a body extending between the first end and the second end, the body defining a cylindrical shape and comprising an outer surface, the outer surface defining a cavity extending between the first end and the second end of the piston skirt;
- a piston head coupled to first end of the piston skirt;
- a support coupled to a bottom surface of the piston head, the bottom surface facing towards the second end of the piston skirt, the support positioned within the cavity;
- and
- a wrist pin mounted on the support and positioned within the cavity, the wrist pin centered on and extending along a wrist pin axis, wherein the wrist pin axis is perpendicular to the longitudinal axis.
A piston assembly, comprising:
- a piston head;
- a piston skirt coupled to the piston head, the piston skirt centered on and extending along a longitudinal axis;
- a wrist pin extending along a wrist pin axis perpendicular to the longitudinal axis, wherein the wrist pin comprises:
- a first end;
- a second end opposite the first end with respect to the wrist pin axis;
- a first protrusion extending from the first end and defining a first opening;
- a second protrusion extending from the second end and defining a second opening;
- and
- a mounting wall comprising a surface extending along a plane from the first end to the second end;
- and
- a connecting rod coupled to the mounting wall of the wrist pin such that a mounting end of the connecting rod is positioned between the first protrusion and second protrusion.
A piston assembly for internal combustion engine, the piston assembly comprising:
- a piston skirt extending along and centered on a longitudinal axis, the piston skirt comprising:
- a first end;
- a second end opposite the first end with respect to the longitudinal axis;
- and
- a plurality of openings formed in the piston skirt adjacent to the first end;
- a piston crown coupled to the piston skirt at the first end of the piston skirt, the piston crown comprising:
- a top surface facing a combustion chamber;
- and
- a bottom surface opposite the top surface facing away from the combustion chamber;
- a gallery defined between the first end of the piston skirt and the bottom surface of the piston crown;
- a wrist pin mounted to the piston skirt;
- a connecting rod, comprising:
- a first end, the connecting rod coupled to the wrist pin at the first end;
- and
- a second end opposite the first end of the connecting rod and configured to couple to a crank shaft;
- a first channel formed in the connecting rod and extending between the first end of the connecting rod and the second end of the connecting rod, the first channel providing fluid communication for oil between the first end of the connecting rod and the second end of the connecting rod;
- an inlet providing fluid communication for oil between an exterior of the piston assembly and the first channel, the inlet configured to couple to an oil jet;
- a second channel extending through the wrist pin between the plurality of openings and the first channel, the second channel providing fluid communication for oil between the first channel and the gallery;
- and
- an outlet providing fluid communication for oil between the gallery and the exterior of the piston assembly.
Dependencies are inferred from the claim text.